基于语义文法的属性知识获取

摘要

Acquisition of attributes and attribute-values of concept is one of the most fundamental research directions in the field of text knowledge acquisition.A method to obtain attribute knowledge is proposed,which depends on attribute semantic grammar.First,attribute semantic grammar was constructed,which can match natural language texts containing attribute knowledge.Then,matched text with the help of the EKEL parser and attribute semantic grammar,and extracted the attribute knowledge in the form of the predicate.The experiments indicate that with the attribute knowledge acquisition from text in the Internet,the method achieved a precision rate of 71％.%概念的属性和属性值获取是文本知识获取领域的一个重要的研究方向.提出一种基于语义文法获取属性知识的方法.首先,构造出一种描述属性知识的属性文法,该文法可以匹配包含属性知识的语句;然后,利用解析器EKEL和属性文法对文本进行匹配,获得谓词表达形式的属性知识.通过对互联网文本中属性知识的抽取,平均准确率达到71％.